Struct AesGmac 

pub struct AesGmac<'c, const KEY_SIZE: usize> { /* private fields */ }

AES-GMAC Cipher Mode (Galois Message Authentication Code)

GMAC provides message authentication without encryption. The data remains in plaintext but any tampering is detected via the authentication tag.

Implementations

impl<'c, const KEY_SIZE: usize> AesGmac<'c, KEY_SIZE>

pub fn new(key: &'c [u8; KEY_SIZE], iv: &'c [u8; 12]) -> Self

Constructs a new AES-GMAC cipher for message authentication. The IV should be 12 bytes long (96 bits) and unique per message.

Trait Implementations

impl<'c, const KEY_SIZE: usize> Cipher<'c> for AesGmac<'c, KEY_SIZE>

const REQUIRES_PADDING: bool = false

Indicates whether the cipher requires the application to provide padding.

fn key(&self) -> &[u8]

Returns the symmetric key.

fn iv(&self) -> &[u8]

Returns the initialization vector.

fn chmod_bits(&self) -> u8

Returns the raw CHMOD field value for this cipher mode.

fn init_phase_blocking(&self, p: Aes)

Performs any cipher-specific initialization (blocking).

fn uses_gcm_phases(&self) -> bool

Indicates whether this cipher mode uses GCM/CCM phases (init, header, payload, final).

const BLOCK_SIZE: usize = 16usize

Processing block size (always 16 bytes for AES).

fn key_size(&self) -> KeySize

Returns the key size.

fn datatype(&self) -> u8

Returns the data type setting for this cipher mode.

fn set_mode(&self, p: Aes)

Sets the cipher mode (CHMOD field).

fn prepare_key(&self, _p: Aes, _dir: Direction)

Performs any key preparation within the processor, if necessary.

fn is_ccm_mode(&self) -> bool

Indicates whether this is CCM mode (which has different final phase handling).

impl<'c, const KEY_SIZE: usize> CipherAuthenticated<16> for AesGmac<'c, KEY_SIZE>

const TAG_SIZE: usize = TAG_SIZE

Defines the authentication tag size.

impl<'c> CipherSized for AesGmac<'c, { _ }>

impl<'c> CipherSized for AesGmac<'c, { _ }>

impl<'c, const KEY_SIZE: usize> IVSized for AesGmac<'c, KEY_SIZE>